Method of filling in hollow cavities in tiles.



e. KAUPERT; METHOD OF FILLING IN HOLLOW QAVI'I'IES' IN TILES.

APPLICATION FILED JAN- 29-1916- 1,256,803. Patented Feb.19,1918;

I subject Hollow Cavities in Tiles,

' GEORGE KAUrEn'r, or CHICAGO, ILLTNOIS.

METHOD OF FILLING- IN HOLLOW CAVITIE$ IN TILES.

Specification of Letters Patent.

Patented Feb. 19, 1918.

Application filed January 29, 1916. Serial 110374 979.

To all whom it may concern Be it known that I, Gnonen KAornR'r, a

of the Emperor ofGermany, residing at 2022 North Fremont street, in the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Methods for Filling in of which thefollowing is a specification.

This invention relates to a process for filling in or closing the ends of the hollow cavi-- ties in articles and more particularly the cavities in tile and the like.

The objects of the invention are to fill or close the ends of the articles with suitable material, such as mortar, to so fit and. arrange the mortar in the hollow cavity that a flat closing wall of even and uniform thickness will be obtained, and to suitably support such closing wall while setting and hardening.

These and other objects I accomplish as hereinafter described and as particularly pointed out in the appended claims, reference being had to the accompanying drawings in which a simple, form of apparatus capable of carrying out my improved process together with several views of tile are shown.

In the drawings Figure 1, represents a longitudinal section through a tile placed in vertical position upon a simple but suitable support, also in section, the upper end of thetile being filled with a set and hardened end closure, and the lower end being filled with a closure of material supported upon the base while setting and hardening.

Fig. 2, is a perspective view of a hollow tile with its end unfilled.

Fig. 3, is a transverse section through a hollow tile having six longitudinal cavities.

Fig. 4, is a perspective view of the six cavity tile shown in Fig. 3 with the ends filled in by my improved process.

Fig. 5, is a longitudinal section through a tile having its ends closed in the manner set forth in my improved process.

My improved process consists in filling and closing the cavities at one end of a hollow tile with suitable material suitably supporting the material in the cavity ends in such manner that a closure wall of even and uniform thickness is secured, permitting the material to harden and then reversing the tile and filling and closing the opposite ends of the cavities in the same manner.

In carrying out my improved process, I place a tile 1 in a vertical position upon a suitable support, such as shown in Fig. 1, and then fill in the bottom ends of the cavities 2, with a horizontal wall 3 of suitable material which is either poured into the tile in semi-liquid form, or placed upon the support and the tile fitted over it.

The material of which the closure wall is constructed is preferably Portland cement, one fourth, to three fourths sand, which are co-mingled together and then mixed with sufiicient water to form a mortar of suitable semi-liquid form.

Various forms of apparatus may be employed to carry out my improved process, for instance the apparatus patented by me December 1st, 1914:, No. 1,119,084.

The supporting apparatus shown is of the simplest construction comprising a base 4 of wood or other suitable material and a top covering 5 upon said base of water-proof tar paper not sanded or similar material upon which the wall of mortar is formed and supported.

The wall 3 is supported by said base, for a sufficient length of time to permit it to set and harden, and the tile is then reversed or turned end for end and the opposite ends of the cavities are fitted in the same manner.

While the wall formed at one end of the tile may be either produced by forcing the tile down upon a proper quantity of soft semi-liquid cement spread upon the top surface of the support or by pouring a suitable amount of the cement into the tile, it is necessary in order to form the remaining end wall, inasmuch as the upper end is now closed and-the cement cannot therefore be poured therein to force the cement up into the open lower end by pressing the tile downwardly upon the support and over soft cement spread upon said support.

It will thus be seen that the tile itself serves to automatically form the end wall as it is pressed downward for it squeezes the soft cement from under its lower edge and this separates the surplus outer cement from the cement forming the end wall so that it can readily be removed before it hardens.

Further a small amount is squeezed inwardly which infinitesimally thickens the surrounding edge of the end Wall at its uncture with the lnterior surface of the tile producing a Wider line of contacting surface and astronger and closer adhesion between the tile wall andthe end wall.

By my improved process, an even and unlform fiat wall is formed in the ends of the cavity which is flush with the end edges a semi-liquid state contacts withand adheres very strongly to the interior surface of the walls of the cavity and as the said end Wall hardens the said marginal edges unite with V the surface of the wall of the cavities forming a permanent and inseparable joint between the two. l

l/Vhile I have illustrated and described a preferred means for and method of carrying my improved process into practice this is capable of a wide range of variation, alteration, modification and change without departing from the spirit of my improved process, I therefore do not wish to be limited to the steps hereinshown and described, but desire to' avail myself of all such variations,

alterations,

may fairly fall within'the'scope-of'the appended claims, or may be construed to be within the scope thereof by invoking the doctrine of equivalents. 7

What I claim as my invention and desire to secure by Letters Patent is 1'. Theherein described process of forming end walls in the open months or cavities customarily found in hollow building tile which consists'in: placing a quantity of mortar or cement while still in the plasticjcondition' upon a fiat hard surface, then forcing 'the tile downwardly through said plastic substance until the edges of the Walls of the tile strike said hard flat surface, whereby the plastic substance enters the open mouth" of said tile and forms a wall which is 'fiu'sh with the edges of the tile, and, finally, sup

porting said tile until the plastic substance "aforesaid hardens and sets, adhering to the inner surfaces of the walls of the tile.

"'2. The herein described process of forming an end wall in the open end of a hollow V tile which consists in spreading a'layer of plastic cement upon a rigid horizontal surface, and forclng said open end vertlcally downward through the cement and against I said surface.

In testimony whereof-I have hereunto affiXed my hand; V V

hicago, Illinois, January th, A D.

i V GEORGE .KA PnnT;

"depicts-91th patent may be obtained for five cents each, by addressing the (commissioner of latents, i WashingtbnQDlG. p e i i modifications and changes as 

